He told France Football: "I am grateful to God for not giving me modesty, because it is a quality that does not help you.
"I live and work in a world where you cannot speak your mind, you can never tell the truth. I do not want to be a hypocrite, not a diplomat. That's my biggest flaw.
"The worst thing is that if you compare yourself with other people, you will always lose in comparison."
He continued: "I am fully aware of my capabilities.
"I like to work with people who think like I think. That way we are always strong. We believe we have the qualities that are the best. We cannot be beaten.
"This is my philosophy."